Developer
<?php
declare(strict_types=1);
namespace Lcobucci\JWT\Validation\Constraint;
use DateInterval;
use DateTimeInterface;
use Lcobucci\Clock\Clock;
use Lcobucci\JWT\Token;
use Lcobucci\JWT\Validation\Constraint;
use Lcobucci\JWT\Validation\ConstraintViolation;
final class ValidAt implements Constraint
{
private Clock $clock;
private DateInterval $leeway;
public function __construct(Clock $clock, ?DateInterval $leeway = null)
{
$this->clock = $clock;
$this->leeway = $this->guardLeeway($leeway);
}
private function guardLeeway(?DateInterval $leeway): DateInterval
{
if ($leeway === null) {
return new DateInterval('PT0S');
}
if ($leeway->invert === 1) {
throw LeewayCannotBeNegative::create();
}
return $leeway;
}
public function assert(Token $token): void
{
$now = $this->clock->now();
$this->assertIssueTime($token, $now->add($this->leeway));
$this->assertMinimumTime($token, $now->add($this->leeway));
$this->assertExpiration($token, $now->sub($this->leeway));
}
/** @throws ConstraintViolation */
private function assertExpiration(Token $token, DateTimeInterface $now): void
{
if ($token->isExpired($now)) {
throw new ConstraintViolation('The token is expired');
}
}
/** @throws ConstraintViolation */
private function assertMinimumTime(Token $token, DateTimeInterface $now): void
{
if (! $token->isMinimumTimeBefore($now)) {
throw new ConstraintViolation('The token cannot be used yet');
}
}
/** @throws ConstraintViolation */
private function assertIssueTime(Token $token, DateTimeInterface $now): void
{
if (! $token->hasBeenIssuedBefore($now)) {
throw new ConstraintViolation('The token was issued in the future');
}
}
}
Developer
To ensure a smooth integration process and optimal performance, follow these best practices: